Uniform force focusing mechanism driven by inclined guide rail

Abstract

The invention discloses a uniform force focusing mechanism driven by an inclined guide rail. The uniform force focusing mechanism comprises a focusing mounting base, supports slidably connected to thetwo sides of the focusing mounting base through vertical linear guide rails, and bases assembled and fixed to the upper ends of the supports. A horizontal focusing assembly is mounted at the upper part of the bases; the horizontal focusing assembly is provided with a spline shaft and a hollow lead screw which are matched through a sliding pair. The hollow lead screw is matched with the spline shaft through a sliding pair so as to move in the axial direction of the spline shaft, and the hollow lead screw is in transmission connection with a wedge angle sliding block mechanism so as to drive the wedge angle sliding block to slide along the inclined guide rail and drive the focusing mounting base to move along the vertical linear guide rail to adjust the vertical position of an optical element. The hollow lead screw can horizontally move on the spline shaft so that motion interference caused by manufacturing and mounting errors of the left wedge angle sliding block and the right wedge angle sliding block can be compensated, the problem of multi-supporting-point motion interference is solved on the premise that the supporting rigidity is guaranteed and the part machining and assembling difficulty is lowered.

Description

technical field [0001] The invention relates to the technical field of space loads, in particular to a force-balanced focusing mechanism driven by an inclined guide rail for large-volume space optical elements. Background technique [0002] Since the application environment of the space optical system is very harsh, and the environment has complex factors affecting the optical system, such as changes in ambient temperature, changes in atmospheric pressure, system vibration, and external impacts, etc., will cause the focal plane of the optical system to produce A certain degree of axial offset will adversely affect the imaging quality of the optical system. In order to ensure the imaging quality of the optical system, it is necessary to adjust the axial position of the corresponding optical components in the optical system, so as to reversely correct the defocus amount of the focal plane of the optical system. At this time, a focusing mechanism is required. [0003] With the...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem in the prior art that the support rigidity of large-volume focusing optical elements is difficult to increase, and to provide a force-balanced focusing mechanism driven by inclined guide rails that provides two support points but does not introduce motion interference

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